Fiat Panda Key Fob Replacement
Fiat Panda keyfobs are equipped with a transponder which transmits an electronic signal from the fob to the car in order to unlock doors or start the motor. The fob might stop working for a variety of reasons.
The most common reason for key fob malfunction is an inoperable coin battery. Other causes are water damage, a faulty module, and interference signals.
Dead Coin Battery
If your key fob's battery is dead, the first step is to replace it. Choose a button battery that has the same voltage, size, and specifications as the previous one.
If the key fob was exposed to water (such as saltwater or rain at the beach), it must be cleaned prior to using it again. A paper towel that has been soaked in isopropyl alcohol or electronic cleaner can be the solution.
If the key fob isn't working despite not being exposed water it could be due a malfunction in the receiver module, or even in the internal electronic chip. In these instances you can reprogramme the key fob with an OBDII scanner could assist.
Water Damage
You could have water damage if your key fob was submerged in a pool, puddle or washing machine. It's generally possible to get it back in working order by taking the batteries off and cleaning the circuit board with ruby alcohol. It's a good idea allow the fob to dry completely before putting in a brand new battery.
You may have a faulty module when your key fob ceases working after replacing the battery or updating. There are reprogramming guidelines for the majority of vehicles' remote key fobs on YouTube or in your owner's guide. You can also try resetting the car's onboard computer using the OBDII scan tool.
Faulty Receiver Module
The key fob has a chip which communicates with the vehicle's system. This chip will stop sending and receiving signals to the car when it is damaged. This could be due to dropping the key fob or by exposure to water. If the key fob you have purchased has stopped working due to exposure to water and you are unable to fix it if clean the chip with electronic cleaner or isopropyl ethanol.
However, if the key fob is still unable to not respond after cleaning it there is a good chance that the component is damaged and will need to be replaced. A faulty receiver can also cause the key to not work. This is typically caused by electromagnetic interference.
A defective electronic chip
The chip inside your key fob plays a vital function in the anti-theft security system of your vehicle. It transmits a signal to the immobiliser unit in your vehicle to tell it whether the key is in fact valid. If the chip is damaged or broken, your vehicle won't start.
A faulty chip may also be caused by interference from other objects, bad weather or transmitters near your vehicle. In this instance, you will need a new key fob.
Contacts for the battery that are damaged
The battery contacts in a key fob are very fragile and are susceptible to damage with hard usage. If they're damaged or bent, the fob will not send any signals to the receiver modules inside the car.
Modern fobs are constructed with rubber seals in order to keep out water. A splash of water or light rain should be fine, but submerging them in salt water could damage the electronic chip.
The key fob has chip that communicates with the immobilizer system of the vehicle to begin it. This system makes use of cryptocoding systems in newer vehicles as well as the traditional red key system in older models. If the chip is defective it must be replaced.
Faulty 12 Volt Batterie
A defective battery can cause the key fob to work. When this happens, the car's computer system won't recognize that the remote is inside the vehicle.
Test the battery with a voltmeter before replacing it to determine its capacity. laser cut charged battery will display 12.6 volts. If the reading drops significantly then it's time to replace the battery.
Install an electrical charge for a few seconds on the battery to check its capacity. This will remove approximately 1 percent of the surface charge. Then measure the voltage again. The longer a battery is able to hold its voltage, the better its capacity. Ideally, it will remain close to 12 volts several minutes.
Faulty Radio Signal
This is the most frequent reason for the key fob to stop sending signals to cars. This issue can be resolved by replacing the battery. But, it is essential to select a replacement battery that has the same size and voltage as the original.
Fobs take a lot of abuse, and they aren't indestructible. The battery buttons and contacts are delicate which means they could be bent or damaged by the force of.
Other transmitters or objects that use the same frequency could also disrupt a signal. For instance, a lighting control panel close to your home can send interference over the same frequency as key fobs utilize. This could interfere with the remote control in your car.
Afflicted OBDII Scan Tool
There are many reasons why a scan tool could not function. Some are more complicated than others.
Professional scan tools allow mechanics to examine the car's systems and run a variety of self-tests. These can be real time savers but they can be expensive, and out of the range of most DIYers.
If your OBD2 scan tool fails to turn on, check the voltage at terminals 16 (scantool power) and 4 (chassis earth). If they are all OK it could be that a fuse has been blown. This is the main reason for a scan tool to fail. The most straightforward fix is to replace the blown fuse.